Linear functions

1.What does it mean to be linear?
To have a straight line.
2.What does it mean to be nonlinear?
To not have a straight line.
Quadratic Function happens once you square one of your variables. Example: x²
Cubic function happens when you cube an object. Example: x³
Linear function happens when you have a constant slope or rate of change.
3.Graph?

4.Table?

5.Equation?